80804638992 has 160 divisors (see below), whose sum is σ = 260451901440. Its totient is φ = 20972252160.

The previous prime is 80804638931. The next prime is 80804639011. The reversal of 80804638992 is 29983640808.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5310948 + ... + 5326140.

It is an arithmetic number, because the mean of its divisors is an integer number (1627824384).

Almost surely, 2^80804638992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80804638992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130225950720).

80804638992 is an abundant number, since it is smaller than the sum of its proper divisors (179647262448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80804638992 is a wasteful number, since it uses less digits than its factorization.

80804638992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16661 (or 16655 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 80804638992 in words is "eighty billion, eight hundred four million, six hundred thirty-eight thousand, nine hundred ninety-two".